Michał Sobkiewicz ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMDc1YTM4NDMy... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15734?atlOrigin=eyJpIjoiMDc1YT... ) HHH-15734 ( https://hibernate.atlassian.net/browse/HHH-15734?atlOrigin=eyJpIjoiMDc1YT... ) orphanRemoval delete entity if moved to freshly added parent ( https://hibernate.atlassian.net/browse/HHH-15734?atlOrigin=eyJpIjoiMDc1YT... ) Issue Type: Bug Affects Versions: 6.1.5 Assignee: Unassigned Components: hibernate-entitymanager Created: 18/Nov/2022 08:47 AM Priority: Major Reporter: Michał Sobkiewicz ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Given the following tree-like structure… @Entity class Node { @Id String id; @ManyToOne Node parent; @OneToMany(mappedBy = "parent" , cascade = CascadeType.ALL, orphanRemoval = true ) Set<Node> children; } … I’d like to be able freely move children between parents. I can easily do that when all entities involved in such transaction (2 parents and 1 child) are already persistent. It’s impossible however to insert new (transient) node “between” two existing nodes. I’m unable to make a └── b become a └── x └── b if x is transient, as Hibernate deletes b. Adding x in between a and b involves 2 steps: * removing b from a.children * adding b to x.children I suppose that step 1. makes Hibernate to mark b for deletion. Step 2. should somehow undo this - and it does, but only when x is already managed (and so is x.children collection). It’s worth noting that x becomes managed in the very same transaction because of CASCADE.ALL on a.children. I even tried to explicitly call persist but it doesn't change anything - b is being deleted anyway. This looks like a bug. I've created SSCCE: https://github.com/perceptron8/orphan-removal cd orphan-removal mvn test Please let me know if I can help somehow. ( https://hibernate.atlassian.net/browse/HHH-15734#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15734#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100210- sha1:9b34d7c )